Kiss of the Wolf by Susan Krinard; Shadow Kissing by Tanith Lee; and The Devil She Knew by Evelyn Vaughn.

Long Synopsis:

Kiss of the Wolf by Susan Krinard: Surgeon Dana Saint-Cyr trusted her instincts, even when they urged her toward an irresistible Louisiana man with a wicked reputation. But would she discredit the whispers of his supernatural powers and murderous intent before falling prey to his passion? Shadow Kissing by Tanith Lee: Artist Vivien Gray's new mysterious lover promised soul-stealing ecstasy that haunted her dreams and set her spine tingling. Now their happiness was at stake--from the ominous evil their very love had unleashed. The Devil She Knew by Evelyn Vaughn: When Marcy Bridges discovered a portal to hell in her closet, she needed help from the last person she wanted to call--her gorgeous landlord. Could she trust her life--and her heart--to the care of a dark, dangerous stranger?